package tech.aistar.filters;

import tech.aistar.model.entity.User;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 本类用来演示: 判断是否属于登录状态
 *
 * @author: success
 * @date: 2021/4/23 1:51 下午
 */
@WebFilter(urlPatterns = "/login/*")
public class LoginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) servletRequest;
        HttpServletResponse resp = (HttpServletResponse) servletResponse;

        User user = (User) req.getSession().getAttribute("user");

        System.out.println("Filter...."+user);
        if(user==null){
            //没有登录...
            resp.sendRedirect("/mac/product/index?login=1");
        }else{
            //放行...
            filterChain.doFilter(req,resp);
        }
    }

    @Override
    public void destroy() {

    }
}
